Re: [COMMITTERS] pgsql-server: Rearrange pg_subtrans handling

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От Bruce Momjian
Тема Re: [COMMITTERS] pgsql-server: Rearrange pg_subtrans handling
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Msg-id 200408252110.i7PLAUn15595@candle.pha.pa.us
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Ответ на Re: [COMMITTERS] pgsql-server: Rearrange pg_subtrans handling  (Christopher Kings-Lynne <chriskl@familyhealth.com.au>)
Ответы Re: [COMMITTERS] pgsql-server: Rearrange pg_subtrans handling  (Alvaro Herrera <alvherre@dcc.uchile.cl>)
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Christopher Kings-Lynne wrote:
> > OK, TODO updated:
> > 
> > * Implement dirty reads or shared row locks and use them in RI triggers
> 
> Can someone explain to me what a dirty read is and how it relates to RI 
> triggers?

Dirty read allows you to see uncommited rows.  I think RI triggers need
it so they can know if someone has a current transaction that is going
to conflict with the RI trigger action, or something like that.  Right
now I think we hang waiting for the transaction to complete.

--  Bruce Momjian                        |  http://candle.pha.pa.us pgman@candle.pha.pa.us               |  (610)
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